CN100478287C - Film coating method of filling material in biological contact oxidation pond - Google Patents
Film coating method of filling material in biological contact oxidation pond Download PDFInfo
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- CN100478287C CN100478287C CNB2007100615839A CN200710061583A CN100478287C CN 100478287 C CN100478287 C CN 100478287C CN B2007100615839 A CNB2007100615839 A CN B2007100615839A CN 200710061583 A CN200710061583 A CN 200710061583A CN 100478287 C CN100478287 C CN 100478287C
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- 230000003647 oxidation Effects 0.000 title claims abstract description 42
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000011049 filling Methods 0.000 title description 3
- 239000000463 material Substances 0.000 title description 3
- 239000007888 film coating Substances 0.000 title 1
- 238000009501 film coating Methods 0.000 title 1
- 239000000945 filler Substances 0.000 claims abstract description 30
- 239000002351 wastewater Substances 0.000 claims abstract description 24
- 239000010802 sludge Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 238000005273 aeration Methods 0.000 claims description 19
- 230000000813 microbial effect Effects 0.000 claims description 17
- 239000000203 mixture Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000000050 nutritive effect Effects 0.000 claims description 7
- 238000011068 loading method Methods 0.000 claims description 6
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000004062 sedimentation Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 235000015097 nutrients Nutrition 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000012258 culturing Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 244000005700 microbiome Species 0.000 description 19
- 238000012360 testing method Methods 0.000 description 8
- 239000012071 phase Substances 0.000 description 7
- 239000000725 suspension Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000000386 microscopy Methods 0.000 description 3
- 235000016709 nutrition Nutrition 0.000 description 3
- 230000035764 nutrition Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- 241000223785 Paramecium Species 0.000 description 2
- 241000700141 Rotifera Species 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000008103 glucose Substances 0.000 description 2
- 238000011081 inoculation Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 241001478240 Coccus Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000244206 Nematoda Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a suspending film method of filler in biological contact oxidation pond, which comprises the following steps: fistedly domesticating activated sludge; adding nutrient solution into domestic activated sludge and armed waste water miscible liquids; mixing evenly; injecting into oxidation pond; aerating; cycle culturing; making microbe adhere on carrier; stewing and settling span; discharging all of sludge water miscible liquids; proceeding waste water culture from low density to high density continually till forming stable shockproof biological film.
Description
Technical field:
The present invention relates to the biological treatment of waste water, refer more particularly to biomembrance process and handle waste water, specifically is the colonization method of filler in a kind of biological contact oxidation pond.
Background technology:
The key that biomembrance process is handled waste water is a microbial growth situation on the carrier in the oxidation pond, i.e. biomembranous set degree and microorganism active on the carrier, and this depends primarily on the character and the combination (being bio-film colonization) biological and carrier of solid support material.People mostly pay attention to the type and the structure of bio-carrier are studied at present, and existing a large amount of bibliographical information and patent reports, and mainly contain " the vexed method of exposing to the sun ", " circulation biofilm method ", " spoil disposal biofilm method fast ", " natural membrane method " four kinds, but certain defective is arranged all separately for the bibliographical information of bio-film colonization method research.Yu Hanqing has proposed quick spoil disposal biofilm method in " experimental study of biofilm reactor colonization method " (documents 1) that 1992 the 8th volumes were delivered the 3rd phase in " Chinese water supply and drainage " magazine, and proof is more superior than circulation biofilm method.Member army peak publishes thesis in " environmental engineering " magazine of 2003 the 21st the 2nd phases of volume and points out in " the novel colonization method of biological aerated filter reactor " (documents 2): adopt the formed biomembranous degree of fixation of circulation biofilm method not so good, big at impact load, particularly during back flushing, very easily come off, thereby cause the restore cycle long, even biofilm again.Crown is put down and think in " influence factor of pre-treatment biological filter biofilm " (documents 3) delivered 2003 the 19th phases that the artificial inoculation biofilm mode biofilm time short in " Chinese water supply and drainage " magazine, and bacterial classification easily fails, and performance stability is poor.The natural membrane method is to utilize nature enrichment culture microbial film, and the time spent is longer, generally needs 1～2 month time.Relevant patent report seldom, " a kind of method of improving the suspended filler biofilm carrier surface forming biofilm property " patent (publication number: CN1600709) (documents 4) of people such as Ma Luming invention, disclose a kind of in traditional biological suspension filler technology, increasing, adopted the bio-film colonization method of different aeration modes according to the redox potential and the pH value height of trade effluent the pretreatment section of catalytic internal electrolysis of iron method as biological suspension filler technology.This patent is primarily aimed at floating stuffing and trade effluent is carried out a biological disposal upon, electrolysis workshop section in increasing.
From documents 1,2,3 as can be seen, at present the bio-film colonization method of report exists with shortcomings such as duration, complicated operation, anti impulsion load are low, make that microbial growth is in poor shape on the carrier, thereby it is not ideal to cause biomembrance process to handle the waste water effect.And water treatment effect is better after documents 4 biofilms, but needs to increase inner electrolyser, complicated operation.Therefore, a kind of method of bio-film colonization simply fast of research highly significant.
Summary of the invention:
The object of the present invention is to provide a kind of bio-film colonization time spent short, the microbial growth degree of fixation is good, the colonization method of filler in the biological contact oxidation pond of anti impulsion load.
Substance of the present invention is: acclimated activated sludge at first, in good active sludge and the institute waste water mixed solution to be processed of domestication, add nutritive medium then, injection be equipped with carry out aeration in the oxidation pond of filler, circulation is cultivated, microorganism is adhered on carrier, standing sedimentation for some time afterwards, all drain again muddy water mixed solution in the oxidation pond, the beginning successive advances waste water by lower concentration to high density to be cultivated, up to the stable impact-resistant microbial film of formation.
The colonization method of filler in the biological contact oxidation pond provided by the invention in turn includes the following steps:
(1) gets the active sludge aeration cultivation at room temperature that to handle waste water and tamed control SV 1～2 day
30Be 25%～35%, sludge quality concentration is about 5000mg/L-9000mg/L;
(2) will cultivate the good mud of domestication and waste water to be processed by volume 1: 2-4 mixes, and the nutritive medium of adding mud mixture volume 2～4%, nutritive medium and mud mixture mixing rear section are injected oxidation pond submergence filler fully, the remaining circulatory pool of pouring into; Under the room temperature in the controlled oxidation pond dissolved oxygen concentration be 1～2mg/L aeration 6～8 hours, make mud fully contact the effect of playing microbe inoculation with filler;
(3) treat that aeration process finishes after, the mixed solution in the circulatory pool is continuously pumped into oxidation pond, the simultaneous oxidation pond overflows water and flows into circulatory pool, so circulates 20-26 hour;
(4) standing sedimentation 1-2 hour, then mud mixture in the oxidation pond is all drained, at this moment existing a spot of set attitude microorganism on the carrier;
(5) beginning organic loading water inlet of 50%～60% when 50%～70% hydraulic load and normal processing during continuously with normal operation in oxidation pond, strengthen hydraulic load and organic loading then gradually, and the increase aeration rate, in oxidation pond, form stable microbial film on the carrier.
The preferred SV of control condition in the described step (1)
30Be 30%, sludge quality concentration is 6000mg/L-7000mg/L.
Described filler can be the various fillers that are applicable to biological contact oxidation pond, as fixed filler, suspension type filler, distributing filler, floating filler or soft, medium-soft type, compounded mix etc., tests preferred suspension type medium-soft type plastics ball filler.
Described nutrition adopts the nutrition that adds in the conventional wastewater treatment, and the C source can adopt glucose or/and starch, N source can adopt urea, P source can adopt phosphoric acid salt, makes C in the waste water: N: P=100 after adding: 5: 1.
The advantage of colonization method of the present invention and beneficial effect:
(1) sludge acclimatization before the biofilm.Have the microorganism of capacity when guaranteeing biofilm in the oxidation pond, and adapt to and grow under the environment of target waste water, the microorganism in the bacterium liquid can adhere between the solid phase filler more fully like this.
(2) add nutritive substance.Keep sufficient nutrient mechanism in the oxidation pond, microorganism can be bred at a high speed, also further increased the adhesion amount of microorganism on the carrier simultaneously.
(3) mud mixture at first carries out aeration after adding oxidation pond.Can accelerate the microorganism in the mud and the contact area of filler by the stirring action of air, and increase the speed of adhering to of microorganism.
(4) aeration circulates after finishing, and microorganism is farthest contacted with filler again, thereby increases the microbial biomass on the filler.
(5) after aeration, working cycle are finished, the oxidation pond suspension microorganism is all discharged.Because suspended state microorganism and set attitude microorganism are coexisting bodies of a pair of these those length that disappear, they fight for nutritive substance and satisfy self growth in oxidation pond.Therefore, during biofilm, reduce suspended state microbial numbers in the oxidation pond, the microorganism of set attitude so will breed fast as far as possible, just can reach best biofilm effect.
(6) after working cycle finishes, begin in oxidation pond, to intake,, improve hydraulic load and organic loading then gradually so that give the certain phase buffer of microorganism growth from low organic loading and hydraulic load.Otherwise too high influent concentration can make microbial film be accumulated in filling surface very soon, is unfavorable for microorganism absorption and forms uniform microbial film at filling surface.In addition, adopt the mode that strengthens aeration intensity gradually, make exactly attached to the set attitude on the carrier can adapt to stronger impact load, so the microbial film that forms compares anti impulsion load for biological.
Description of drawings:
Fig. 1 is a biofilm process aeration phase oxidation pond operation scheme synoptic diagram
Fig. 2 is that biofilm process aeration phase finishes back cycle stage oxidation pond operation scheme synoptic diagram
Fig. 3 finishes back fill phase oxidation pond operation scheme synoptic diagram the biofilm process cycle stage
Embodiment
Embodiment 1:
Test employing volume is that 13 liters biological contact oxidation pond is handled sanitary wastewater, filler adopts the medium-soft type plastics ball filler of suspension type, and test ambient temperature is 26 ℃, wastewater pH=6.8, mud is taken from the returned sluge in certain domestic sewage factory second pond, and domestication finishes back SV
30=30%, mass density is 7000mg/L.
Cultured mud and sanitary wastewater were mixed in 1: 3 by volume, and according to C: N: P=100: 5: 1 ratio adds nutrition 300ml (nutrient solution prescription sees the following form 1), then mixed solution is injected oxidation pond submergence filler fully, the remaining circulatory pool of pouring into, DO=1.0mg/L in the controlled oxidation pond under the room temperature pressed aeration shown in Figure 16 hours.Then oxidation pond is connected circulatory pool, aeration rate remains unchanged, and presses circular flow shown in Figure 2 after 24 hours, mixed solution in the oxidation pond all being emitted, begin by step shown in Figure 3, at first is that 1L/h enters sanitary wastewater continuously with the flow velocity, water inlet COD concentration is about 280mg/L, NH
3-N concentration is about 22mg/L, and increasing the flooding quantity flow velocity after two days gradually is 2L/h, and COD concentration is 580mg/L, NH
3-N concentration is 40mg/L, and corresponding increase aeration rate and water inlet.
Begin to handle waste water after three days, COD removal has reached 80%, NH
3-N clearance 〉=70%, the microscopy microorganism growth is good.The filler outward appearance presents--tawny--cervine variation by the mud yellow gradually, and all indexs prove that the microbial film that this method obtains is stable, have wastewater treatment ability preferably.
Table 1 ratio of nutrient solution
| Form title | Add-on | Form title | Add-on |
| Starch | 36/g | (NH 4) 2CO 3 | 22.4/g |
| Glucose | 22/g | K 2HPO 3 | 8.8/g |
| Tap water | 5/L |
Embodiment 2:
Adopt the trade effluent of certain the coke-oven plant's anaerobic pond water of doing experiment, test operation condition and step are with embodiment 1.
Intake after four days waste water COD clearance 〉=60%, NH
3-N clearance 〉=50%, the microscopy microorganism growth is good.One week back finds that there is the thread fungus growth at the filler edge, and by more protozoon and metazoan such as paramecium, wheel animalcule, nematode, campanularian etc.And find to have more coccus, bacillus, zoogloea and a large amount of campanularians through microscopic examination near the microbial film at filler center.All indexs prove that the microbial film that this method obtains is stable, have wastewater treatment ability preferably.
Embodiment 3:
Test employing volume is that 24 liters biological contact oxidation pond is handled sanitary wastewater, and test operation condition and step are with embodiment 1.
The biofilm of intaking after three days success, COD removal has reached 80%, NH
3-N clearance 〉=70% carries out microscopy to the biophase of filter material surface, find sticking shape mud on it be mainly campanularian, wheel animalcule, paramecium, etc. primary or metazoans such as branch worm, illustrate that the microbial film growth on the filtrate is more perfect.And increase flooding quantity (HRT is reduced to 4h from initial 12h) in the test later stage, increased water flow is to biomembranous degradation degree on the filler.Test shows that waste water is to COD, NH
3The not too big variation of the clearance of-N, microorganism growth is firm on the microbial film, and biofilm biomass is stable.
Claims (2)
1, the colonization method of filler in a kind of biological contact oxidation pond is characterized in that in turn including the following steps:
(1) gets the active sludge aeration cultivation at room temperature that to handle waste water and tamed control SV 1～2 day
30Be 25%～35%, the active sludge mass concentration is 5000mg/L-9000mg/L;
(2) will cultivate the good active sludge of domestication and waste water to be processed by volume 1: 2-4 mixes, and the nutritive medium of adding active sludge and waste water mixture volume 2～4% to be processed, with nutritive medium and active sludge and the complete submergence filler of waste water mixture mixing to be processed rear section injection oxidation pond, the remaining circulatory pool of pouring into; Under the room temperature in the controlled oxidation pond dissolved oxygen concentration be 1～2mg/L aeration 6～8 hours;
(3) treat that aeration process finishes after, the mixed solution in the circulatory pool is pumped into oxidation pond, the water outlet of simultaneous oxidation pond flows into circulatory pool, so circulates 20-26 hour;
(4) standing sedimentation 1-2 hour, then mud mixture in the oxidation pond is all drained;
(5) beginning organic loading water inlet of 50%～60% when 50%～70% hydraulic load and normal processing during continuously with normal operation in oxidation pond, strengthen hydraulic load and organic loading then gradually, and the increase aeration rate, in oxidation pond, form microbial film on the carrier.
2, colonization method as claimed in claim 1 is characterized in that, control SV in the described step (1)
30Be 30%, sludge quality concentration is 6000mg/L-7000mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100615839A CN100478287C (en) | 2007-03-09 | 2007-03-09 | Film coating method of filling material in biological contact oxidation pond |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100615839A CN100478287C (en) | 2007-03-09 | 2007-03-09 | Film coating method of filling material in biological contact oxidation pond |
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| CN101041507A CN101041507A (en) | 2007-09-26 |
| CN100478287C true CN100478287C (en) | 2009-04-15 |
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Address after: 030062 No.5, Nange Village Industrial Park, beige Town, Xiaodian District, Taiyuan City, Shanxi Province Patentee after: Shanxi Keteng environmental protection new material Co.,Ltd. Address before: 030062 No.5, Nange Village Industrial Park, beige Town, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI KETENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: 030062 No.5, Nange Village Industrial Park, beige Town, Xiaodian District, Taiyuan City, Shanxi Province Patentee after: SHANXI KETENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 030062 No.5 Nange Industrial Park, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI KETENG ENVIRONMENTAL PROT TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |